3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (empty($mystring)) { echo 'empty'; } if ($mystring == null) { echo 'null; // and warning } if (!isset($mystring)) { echo 'not set'; }

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
5.4.290.0100.05512.50
5.4.280.0120.05012.39
5.4.270.0130.05212.39
5.4.260.0100.05312.39
5.4.250.0190.04312.39
5.4.240.0080.04412.39
5.4.230.0130.04912.38
5.4.220.0100.04912.38
5.4.210.0150.03812.38
5.4.200.0150.05212.38
5.4.190.0090.04812.38
5.4.180.0070.04712.38
5.4.170.0080.03912.39
5.4.160.0030.03912.38
5.4.150.0060.03812.38
5.4.140.0040.04012.07
5.4.130.0040.03812.05
5.4.120.0080.03412.02
5.4.110.0040.03712.01
5.4.100.0050.03812.01
5.4.90.0070.03712.01
5.4.80.0060.03712.01
5.4.70.0030.03812.01
5.4.60.0060.03412.01
5.4.50.0060.03512.01
5.4.40.0100.03112.00
5.4.30.0060.03611.99
5.4.20.0080.03411.98
5.4.10.0080.04011.99
5.4.00.0080.05111.48
5.3.280.0120.05012.71
5.3.270.0060.04012.72
5.3.260.0050.04012.71
5.3.250.0040.04112.72
5.3.240.0070.04212.72
5.3.230.0090.03712.71
5.3.220.0060.04112.68
5.3.210.0070.04312.68
5.3.200.0040.04912.68
5.3.190.0070.05012.68
5.3.180.0050.05012.68
5.3.170.0040.04012.67
5.3.160.0100.03412.67
5.3.150.0110.03412.67
5.3.140.0080.03512.66
5.3.130.0060.03812.66
5.3.120.0040.04112.66
5.3.110.0060.03812.66
5.3.100.0020.04112.12
5.3.90.0050.03712.08
5.3.80.0060.03512.08
5.3.70.0080.03512.07
5.3.60.0090.03312.07
5.3.50.0030.03912.00
5.3.40.0060.03712.00
5.3.30.0110.02911.95
5.3.20.0070.03311.72
5.3.10.0040.03611.70
5.3.00.0060.03511.68
5.2.170.0010.0349.18
5.2.160.0030.0319.18
5.2.150.0050.0439.18
5.2.140.0070.0319.18
5.2.130.0030.0329.14
5.2.120.0050.0439.14
5.2.110.0070.0489.14
5.2.100.0080.0419.14
5.2.90.0100.0389.14
5.2.80.0040.0449.14
5.2.70.0080.0429.14
5.2.60.0050.0329.09
5.2.50.0070.0309.06
5.2.40.0060.0399.04
5.2.30.0050.0399.02
5.2.20.0040.0299.00
5.2.10.0040.0338.92
5.2.00.0060.0328.79
5.1.60.0040.0308.07
5.1.50.0060.0248.07
5.1.40.0040.0258.05
5.1.30.0030.0278.40
5.1.20.0060.0258.42
5.1.10.0030.0288.15
5.1.00.0040.0268.14
5.0.50.0040.0236.63
5.0.40.0030.0206.48
5.0.30.0040.0306.29
5.0.20.0030.0196.27
5.0.10.0030.0206.24
5.0.00.0030.0306.23
4.4.90.0030.0154.78
4.4.80.0010.0174.76
4.4.70.0040.0144.75
4.4.60.0020.0164.75
4.4.50.0030.0154.77
4.4.40.0030.0254.71
4.4.30.0030.0154.76
4.4.20.0030.0154.84
4.4.10.0010.0174.85
4.4.00.0020.0254.75
4.3.110.0020.0174.67
4.3.100.0020.0164.67
4.3.90.0050.0134.63
4.3.80.0050.0234.58
4.3.70.0020.0154.63
4.3.60.0000.0174.63
4.3.50.0020.0164.63
4.3.40.0020.0254.54
4.3.30.0020.0163.29
4.3.20.0020.0163.27
4.3.10.0030.0153.22
4.3.00.0170.0179.42

preferences:
141.69 ms | 1394 KiB | 7 Q